.overlay{
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.6);
    z-index: 50;
    display: flex;
    flex-direction: column;
    justify-content:flex-end;
    align-items: center;
    transition: all 0.2s;

}